CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Unearned ESOP Shares [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Additional Paid-In Capital [Member]	Common Stock [Member]	SBLF Preferred Stock [Member]	Total
Balance at Dec. 31, 2014	$ (462)	$ (378)	$ 50,936	$ 46,416	$ 47	$ 20,000	$ 116,559
Comprehensive Income
Net income			6,343				6,343
Unrealized holding gain (loss) on investment securities net of tax		127					127
Comprehensive income							6,470
Cash dividend at $0.40 per common share			(1,843)				(1,843)
Preferred stock dividends			(73)				(73)
Dividend reinvestment			(42)	42
Redemptin of SBLF Loan						$ (20,000)	(20,000)
Net change in unearned ESOP shares	146						146
Repurchase of common stock			(1,826)		(1)		(1,827)
Stock based compensation				319			319
Tax effect of the ESOP dividend				32			32
Balance at Dec. 31, 2015	(316)	(251)	53,495	46,809	46		99,783
Comprehensive Income
Net income			7,331				7,331
Unrealized holding gain (loss) on investment securities net of tax		(677)					(677)
Comprehensive income							6,654
Cash dividend at $0.40 per common share			(1,814)				(1,814)
Dividend reinvestment			(47)	47
Net change in unearned ESOP shares	147						147
Repurchase of common stock			(865)				(865)
Stock based compensation				489			489
Tax effect of the ESOP dividend				32			32
Balance at Dec. 31, 2016	(169)	(928)	58,100	47,377	46		104,426
Comprehensive Income
Net income			7,208				7,208
Unrealized holding gain (loss) on investment securities net of tax		(67)					(67)
Reclassification due to Accounting Standard Update (ASU 2018-02)		(196)	196
Comprehensive income							7,141
Cash dividend at $0.40 per common share			(1,804)				(1,804)
Excess of fair market value over cost of leveraged ESOP shares released				110			110
Dividend reinvestment			(52)	52
Exercise of stock options				155			155
Net change in unearned ESOP shares	(586)						(586)
Stock based compensation				515			515
Balance at Dec. 31, 2017	$ (755)	$ (1,191)	$ 63,648	$ 48,209	$ 46		$ 109,957